I was talking with @Mozella yesterday and he mentioned a program that scans your targets and measures the groups. I assume this requires that you get to keep your targets to scan them. It would not be a lot of help for MR/LR shooting. I keep a target plot on traditional log sheets and copy the data over to target plots in RSI Shooting Lab (SL). I can associate these plots with the specific load but I have not found a way to associate them together as a match. SL has its own flow which is not particularly intuitive for someone used to most common MS Windows programs. (It takes a lot of getting used to. IMHO)
That sounds like OnTarget https://www.ontargetshooting.com/ You can take a picture of your targets then upload them to your computer and use the OnTarget software to do the group measurements.
I use this Excel sheet for my record keeping